You may be answering a different question than the one I'm asking. Once I enter the Live account user name and password while logged on under a particular Windows account, I am never asked for the live password again... even if I log out from Windows as that user and log back in. Even after reboot, the live account does not prompt for password.
This is for a school, where the kids will have the password to log into Windows, but we don't want them installing store apps on their own. Again, once the teacher provides the live account password to install a store app it is memorized forever.
thanx